Ambient light sensor in a hazard detector and a method of using the same
US11113941B2 · kind B2 · utility
0Cited by
11References
24Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 19, 2016 |
| Grant date | Sep 7, 2021 |
| Priority date | — |
| Expiry date | Aug 17, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B7/06
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method of operating an alarm device including a processor and a light detector, the method including for operating the light detector to sample a light intensity within an interior space a plurality of times to produce a plurality of light intensity measurements, operating the processor to determine a light intensity value, wherein the light intensity value is based upon the plurality of light intensity measurements, and operating the processor to decide whether a night cycle can be determined based on the light intensity values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.